Hi all, I'm stuck on my wife's (hand me down) G5, a dual 2Gig G5 chips running 10.5.8. It's reached end-of-life with support for much of the software I use, and is getting a little clunky and unreliable. (Taking sometimes 5 to 10 goes to switch it on, black screen of death, fan spinning up like it's trying to take off, and all that scary caper). So if I was to buy a new iMac, would the iMac chip actually be significantly more powerful or faster than the dual 2 Gig G5's? Also, what's the best way to migrate from old 10.5.8 to Mountain Lion? Should I time machine across? And what apps / software are significantly different? Should I keep the old iLife for family movies, or is the new one good? Thanks all!